Rob Andrews’s review published on Letterboxd:
I'll start with the things I liked. Will Smith and Margot Robbie. Robbie inhabits Harley Quinn like few actors have inhabited comic book characters before. She certainly seems like she was born for this role and I really hope the DCEU finds a place for her in future films.
Will Smith is good as Deadshot. He does bring some much needed heart to proceedings. The main issue I have with Deadshot is the fact that Will Smith plays him exactly the same as every other Will Smith character.
Viloa Davis plays Amanda Waller with all the steely determination she requires but the character is so one-note that it's hard to believe anything she does
After that, Katana and Captain Boomerang have occasional bright spots but that's about it. Leto's Joker is interesting but there isn't enough of him to pass judgement on him yet.
Everything else about this movie is an utter mess. Character motivations are as standard they come. The villain is so mediocre I could barely tell you who they are and what they are doing. Cameos from Justice League members are thrust into the plot when they have no reason at all being there and just make things even more over crowded.
The first 20/30 minutes are the film is just exposition dump after exposition dump (Here's Deadshot and what he did. Here's Harley Quinn and what she did, and so on and so on).
David Ayer directs the action with all the subtly of someone wielding a sledge hammer. The action is often incoherent, particularly in the final scene, I had no idea what was going.